TY - JOUR
T1 - Reliability and Performance Improvement of PUC Converter Using A New Single-Carrier Sensor-Less PWM Method with Pseudo Reference Functions
AU - Abarzadeh, Mostafa
AU - Peyghami, Saeed
AU - Al-Haddad, Kamal
AU - Weise, Nathan
AU - Chang, Liuchen
AU - Blaabjerg, Frede
N1 - Publisher Copyright:
IEEE
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021
Y1 - 2021
N2 - A new single-carrier sensor-less pulse-width modulation (PWM) method using suggested pseudo reference functions is proposed for packed U-cell (PUC) converter to improve performance and reliability of the PUC converter. It is comprised of one PWM carrier signal, and two suggested pseudo reference functions. By employing the proposed modulation method, the PUC dc capacitor voltage ripple is substantially decreased, and faster sensor-less capacitor voltage balancing is obtained. Moreover, the power losses are evenly distributed among all power switches. Consequently, notable reduction of the PUC dc capacitor voltage ripple and even distribution of the power loss among switches enhance the PUC converter reliability and lifetime. In addition, odd multiples of the switching harmonic clusters are eliminated from the output voltage, thus, the values of output passive filter components are halved. Hence, applying the proposed single-carrier sensor-less PWM method remarkably improves the performance, power density, reliability, and lifetime of the PUC converter and notably simplifies implementation of the switching pattern. Provided experimental results and comparisons as well as reliability analysis verify the viability and effectiveness of the proposed PWM method.
AB - A new single-carrier sensor-less pulse-width modulation (PWM) method using suggested pseudo reference functions is proposed for packed U-cell (PUC) converter to improve performance and reliability of the PUC converter. It is comprised of one PWM carrier signal, and two suggested pseudo reference functions. By employing the proposed modulation method, the PUC dc capacitor voltage ripple is substantially decreased, and faster sensor-less capacitor voltage balancing is obtained. Moreover, the power losses are evenly distributed among all power switches. Consequently, notable reduction of the PUC dc capacitor voltage ripple and even distribution of the power loss among switches enhance the PUC converter reliability and lifetime. In addition, odd multiples of the switching harmonic clusters are eliminated from the output voltage, thus, the values of output passive filter components are halved. Hence, applying the proposed single-carrier sensor-less PWM method remarkably improves the performance, power density, reliability, and lifetime of the PUC converter and notably simplifies implementation of the switching pattern. Provided experimental results and comparisons as well as reliability analysis verify the viability and effectiveness of the proposed PWM method.
KW - Capacitor voltage ripple reduction
KW - Capacitors
KW - Discharges (electric)
KW - lifetime improvement
KW - Modulation
KW - multilevel converter
KW - PUC converter
KW - Pulse width modulation
KW - pulse-width modulation method
KW - Reliability
KW - reliability improvement
KW - sensor-less voltage balancing
KW - Switches
KW - Voltage control
UR - http://www.scopus.com/inward/record.url?scp=85098786676&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2020.3030698
DO - 10.1109/TPEL.2020.3030698
M3 - Journal article
AN - SCOPUS:85098786676
SN - 0885-8993
VL - 36
SP - 6092
EP - 6105
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 5
M1 - 9222099
ER -